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This genuine Vacheron Constantin minute hammer for Caliber 1136 is a core component essential for ensuring the precise timing and resetting functions of this chronograph movement. As a key actuating part of the column-wheel chronograph system, it is responsible for driving the chronograph minute and second hands to instantly and synchronously return to the zero position when the reset button is pressed.
Manufactured from high‑precision steel and assembled within the renowned ultra‑thin automatic chronograph movement (Cal. 1136), this part is an ideal spare for professional watchmakers to restore reset functionality and address issues like misaligned or erratic chronograph hands during service.
Reset Function Core: As a key component for the chronograph reset function, it ensures the minute and second hands return to zero instantly and synchronously.
Column-Wheel System Part: Works precisely with the column-wheel chronograph mechanism upon pressing the reset button to engage the heart-shaped cam for reliable reset action.
Genuine Vacheron Constantin Part: Manufactured in Switzerland to the brand’s stringent quality standards.
High-Strength Steel: Crafted from durable steel to withstand the mechanical stresses of frequent start/stop/reset operations.
Essential Service Spare: A critical replacement part for professional watchmakers to restore full reset functionality during movement repair.
| Parameter | Details |
|---|---|
| Part Name | Chronograph Minute Hammer |
| Brand | Vacheron Constantin |
| Caliber | 1136 (including QP variant) |
| Movement Base | F. Piguet 1185 |
| Jewels | 37 / 38 |
| Vibration | 21,600 vph (3 Hz) |
| Power Reserve | ~40 Hours |
Movement Servicing: For full overhauls of Vacheron Constantin Caliber 1136 where worn, damaged, or lost minute hammers need replacement.
Chronograph Repair: Ideal for repairing malfunctioning reset functions, such as hands not returning to zero or returning off-center with significant wobble.
Compatible Models: The Caliber 1136 is a very high-quality automatic chronograph movement used in classic Vacheron Constantin Patrimony, Overseas, and Phidias models.
1. Is this a genuine Vacheron Constantin part?
Yes. The product is clearly an original factory part. Given that it is specifically listed as being for Caliber 1136, it is an authentic Vacheron Constantin component, not a third-party generic substitute.
2. Will it perfectly fit the Vacheron Constantin Overseas Chronograph 49020?
Yes. The Caliber 1136 in the 42mm Overseas Chronograph is an evolution of this movement series (cal. 1136 QP). This minute hammer is a core component of its chronograph mechanism and is directly compatible. It is the correct OEM-spec replacement part for repairing the reset function on this specific reference.
3. What are the symptoms of a faulty minute hammer?
A faulty minute hammer can cause the chronograph minute hand (or second hand) to fail to return to zero after the reset button is pressed, return to an incorrect position, or exhibit significant wobble and hesitation during the reset action. This often indicates the hammer is worn or its spring is fatigued.
4. Does installation require special skills?
Yes. Replacing a minute hammer involves disassembling the chronograph module, proper alignment of the hammer with its cam, and precise reassembly. It requires professional tools, a stable work environment, and is strongly recommended to be performed by an experienced watchmaker.
5. Is this part compatible with the ETA 7750 movement?
No. It is not compatible. The Caliber 1136 is a high-end chronograph movement with a completely different architecture than the ETA 7750, particularly its column-wheel actuated chronograph system.
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